#1 Home Improvement Retailer

Internet #303837295

Model #GNU75-125

Store SO SKU #1002948915

Commercial Universal Heavy Duty 75 Gal. 125K BTU Ultra Low NOx (ULN) Natural Gas Tank Water Heater

  • Delivers hot water in heavy duty, tight retrofit applications
  • Compact size and multiple water connections simplify installation
  • Backed by Rheem's 3 year limited warranty
  • See More Details

Product Overview

Rheem Commercial Universal Gas Water Heaters are designed to fit into tight retrofit applications and have the features and capacity to meet heavy duty demands. The tighter the commercial retrofit, the more you will appreciate how the Universal's compact size and multiple water connections simplify installations. Please Note: This model requires a 120-Volt power source.
  • California & Utah Residents (Utah Effective 7/1/18): this water heater model meets or exceeds Ultra-Low NOx (ULN) emissions requirements for all air quality management districts
  • Texas Residents: this water heater model meets or exceeds Low NOx (LN) emissions requirements for all air quality management districts
  • Space saver design: the short heights and narrow jacket diameters, plus the top, front and rear water inlets/outlets offer the ultimate in installation flexibility
  • System Sentinel LED diagnostic system: verifies system operation sequence by sequence
  • Universal's patented multi-flue design with proprietary steel formulation and two coats of porcelain enamel provide strength and reliability in heavy duty applications
  • Stainless steel burners: highly resistant to the effects of negative air pressure common in modern commercial buildings
  • Low profile automatic flue damper: minimizes overall product height and heavy-duty vent hood supports are designed to withstand the rigors of installation
  • Easy to service: factory installed full port, full flow brass drain valve allows for faster draining and servicing
  • Direct spark-to-pilot ignition system: energy saving ignition that ignites pilot only when there is a call for heat
  • Built-in corrosion resistance: patented anode design for a long tank life
  • Warranty: 3-year limited tank warranty
  • Need a different configuration, no problem; our universal line offers water heaters in 35 Gal. to 100 Gal. models available in a range BTU/h in natural gas and liquid propane
  • Call 1-855-400-2552 before noon for same-day installation service in most areas, or visit our Water Heater Installation page for more information.
  • Click here for more information on Electronic Recycling Programs
  • California residents

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Compare Similar Gas Tank Water Heaters

Commercial Medium Duty 75 Gal. 75K BTU Low NOx (LN) Natural Gas Tank Water Heater
current product
Commercial Universal Heavy Duty 75 Gal. 125K BTU Ultra Low NOx (ULN) Natural Gas Tank Water Heater
Universal Heavy Duty 76 Gal. 199.9K BTU Commercial Natural Gas Tank Water HeaterCommercial Universal Heavy Duty 76 Gal. 180K BTU Natural Gas Tank Water Heater
BrandRheemRheemRheemRheem
NameCommercial Medium Duty 75 Gal. 75K BTU Low NOx (LN) Natural Gas Tank Water HeaterCommercial Universal Heavy Duty 75 Gal. 125K BTU Ultra Low NOx (ULN) Natural Gas Tank Water HeaterUniversal Heavy Duty 76 Gal. 199.9K BTU Commercial Natural Gas Tank Water HeaterCommercial Universal Heavy Duty 76 Gal. 180K BTU Natural Gas Tank Water Heater
Price
Ratings
(6)
(2)
(6)
(6)
Nominal Tank Capacity (gallons)75757676
Application TypeCommercialCommercialCommercialCommercial
Water Heater ProfileTallTallTallTall
Vent TypeAtmosphericAtmosphericAtmosphericAtmospheric
Product Height (in.)64 in65.5 in68.8125 in68.8125 in
Water Heater FeaturesLoNox,Overheat Protection,Temperature Pressure Relief ValveOverheat Protection,Temperature Pressure Relief Valve,Ultra LoNoxOverheat Protection,Temperature Pressure Relief ValveOverheat Protection,Temperature Pressure Relief Valve
BTU Rating75000125000199900180000
View ProductView ProductView ProductView Product

Specifications

Dimensions

Product Depth (in.)
26.25 in
Product Height (in.)
65.5 in
Product Width (in.)
26.25 in
Tank Valve Size (in.)
1.5
Water Connection Size (in.)
1.5

Details

Application Type
Commercial
BTU Rating
125000
Commercial/Residential
Commercial
Finish Family
Gray
Fuel Type
Gas
Household Size
5+
Indoor/Outdoor
Indoor
Maximum Temperature (F)
180
Minimum Temperature (F)
85 °F
Nominal Tank Capacity (gallons)
75
Pack Size
1
Product Weight (lb.)
600 lb
Recovery Rate at 90F Rise (gallons/hour)
135
Returnable
90-Day
Tank Lining Material
Glass
Tank Warranty
3 Year
Uniform Energy Factor
0
Vent Type
Atmospheric
Water Heater Features
Overheat Protection,Temperature Pressure Relief Valve,Ultra LoNox
Water Heater Profile
Tall
Wattage (watts)
0

Warranty / Certifications

Certifications and Listings
CSA Listed,UL Classified
Labor Warranty
No Warranty
Part Warranty
3 Year

Questions & Answers

2Questions2Answers

How many motel rooms can this heater service?

Asked by Nick February 5, 2020
1
Answer

Thank you for asking. Please contact us directly for assistance 800-432-8373 (opt 2, 1, 3).

Can this be converted by the factory to propane use? What is the recovery rate for this unit?

Asked by Wayner November 12, 2018
1
Answer

485 GPH at a 40 degree rise.

Customer Reviews

  • 5
    out of 2 reviews
  • 0% recommend this product
Filter by:
Showing 1-2 of 2 reviews
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Outstanding hot water heater ...
Outstanding hot water heater
by Alfredo
Showing 1-2 of 2 reviews